Your last 3 lines summed up all that i was saying. The tolerance level of the silent majority to such violence is much higher today than it was 3 decades ago. You tell me, is it something to do with the gradual extremism mixed in the population or not. Has or is the Pakistani population today far more - i dont know how else to put this so - tending more towards conservatism and fundamentalism(a difference of degree, not type) than 3 decades ago? A Simple Yes or No would tell me what you think of the situation.
No after so much bloodshed, people are just afraid to speak out against someone who answers by assassinating you and taking a few more innocents alongside.
Weaponization of the society as a result of the Afghan war has been a major reason that people think a hundred times before saying something about the extremists. 3 decades ago, people had differences too and they always will, but after some rock throwing or exchanging dundays, they used to go their ways. Nowadays, you get into such altercation with the extremists, only one person goes home.
By this I do not mean that everyday or everywhere such things happen, but as a bread earner for my family, why would I want to stick my neck out and challenge someone's extremists views when the cost of doing so is so high for me? Most of the Pakistanis stick to their business. If a movement comes along that has the right kind of support and challenges the extremist mindset, then there is hope that more people (silent majority) will get on board. Right now, this is a very slow journey. Like Swat, people will see the actions of the extremists up close and then decide that they do not want this and become more vociferous in their refusal.
I would suggest you draw a parallel to what Pakistan is going through with the random mass shootings in the United States by the fringe elements on the right. People in the US know that guns are being used to kill innocents. They know that there is a need to have tighter gun controls but the reality is that nothing of this sort has happened. The gun supporters find the law to be on their side and unless something significantly compelling happens, the Americans will remain in this state of paralysis. Such is the situation at home with Pakistanis too. Replace the gun lobby with our extremists and you essentially have the same problem. The difference in magnitude is only a matter of time.